Bring all Unicode property definitions into core

Bring all Unicode property definitions into core

This commit causes the looking up of \p{} Unicode properties to be done
without having to use the swash mechanism.s, with certain exceptions.
This will all be explained in the merge commit.

This commit uses Devel::Tokenizer::C to generate the code that turns the
property string as keywords into numbers that can be understood by the
computer.  This mechanism generates relatively large code.  The next
commits will replace this with a smaller mechanism.